Seems there's been no mention of the battle editor on the forum. I just had a little mess about in it and it seems very cool-you can make maps and/or historical battles! You can even select the unit size (to represent a unit that had lost men in fighting, perhaps?)
When you go to make a new battle, you can also position the cursor over any point in the camp. map and then the editor loads up the terrain for that point in the game! You can then build a battle on it or alter the terrain itself.
One question I to have, though: Does anyone know if altering the terrain of the map for the custom battle effect the terrain for the main game? From first glace it appears that it might, because you have to start a new map from a position in the camp map, there's no option to just have a flat piece of land and edit it and build it up yourself. I'd hate to go and make a whacky map to fight on only to come across it in SP!
Anyone else fiddled with the editor? I reckon some people could make some very cool maps/historical battles to fight!
Oh, and if you didn't see it, to enable the battle editor in the options menu of RTW, you must start the game with the command line option -enable_editor
